Process of manufacturing chain-links.



J. M. DODGE. PROCESS 01 MANUFACTURING CHAIN LINKS.

APPLICATION rum) MAY 28, 1909.

Patented Nov. 14, 1911.

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JAMES M. DODGE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB '10 LINK-BBL!!! COMPANY. OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PROCESS OF MANUFACTURING CHAIN-LINKS.

Specification of Letters Patent.

Application lied Iay 28, 1909. Serial No. 498,853.

To all whom it my camera:

Be it known that I, JAMES M. ponon a citizen of the United States, residing 1n .Philadelphia, Pennsylvania, have invented certain Improvements in Processes of Manufacturing Chain-Links, of which the following is a specification. I

The object of my invention is to make an i open rectan llar detachable chain link from wrou ht ro s orshapes welded together, the rod orming the body portion of the link and the shaped sectlon forming the hook member.

In, the accompanying drawing :Figure 1, 1s a pers ective'view of a chain link made in accor ance with my Invention; Fig.2,

is a. View showing the two parts of a link I shaped ready for welding; Fig. 3, is a plan view of; the hooked portion of the link; Fig. 4,.is an end view of the same; Fig. 5, is a grspective view of the rod from which the dy portion of the link is made; and Fig.

6, is a view illustrating a modification of the invention.

Open rectan lar detachable links are usually made 0 a single piece of malleable iron and great care must be exercised in manufactur ng these lliikS so as to detect the"presence of any blow holes or other de fects in the castin before they are used.

. By making the lin of wroughtmetal rods and shapes the above defects are entirely ivoided an if the weld is roperly made a veil'yestrong link is the resu t.

ferring to the drawing, A is the open rectangular link having slde bars a, a. and 11 transverse bar a at one end, and a hooked member at the opposite end. The body por- (ion of the'link is made by bending a bar A, as illustrated in Fig. at the points w, m, to form the crossbar a and the side bars a, a'; the bar bein notched in the prescut instance at each en a to rovide a comparatively flat surface where 1t is 'welded to the hooked member B.

.The hookedmember is made as shown in Figs. 3 and 4, having a hooked portion b;

the opening in the hook being of sufiicient diameter to receive the crossbar-a7 of an adjoining link. The rear end of the hooked member B is extended at each end as shown at b to form, when welded to the body portion A, one end of the link. The rear end of the hooked member isof such a length as to fit between'the recessed ends a of the bar, as illustrated in F ig. 2, so that Patented Nov. 14, 1911.

all that is necessary is to assemble the two parts and ass an electric current through them, welding the two surfaces a. and b together, making a very substantial link.

In Fig. 6, I have shown a modification in which the extensions 6' are longer than the link illustrated in Fig. 2, and the ends of the bars A are not notched at each end, but the contact is madeby the ends a of the .bar coming in contact with the surfaces 6 of the hooked member B.

By the above process I make the body portion of the link from bars or rods cut lIll'.O

given lengths and bentto shape, and the hooked member I can shape in suitable dies, so that all that is necessary is to provide means for assembling the two parts of the links and welding them, preferably by the electric process.

Any welding process maybe usedin weldat the rear of the hook, said lateral extensions being in contact with the ends of the side bars, and uniting the said side bars to the lateral extensions of the hook member, forming a unitary structure, .with a-'plain cross bar at one end and ahooked bar at I the opposite end.

In testimonywhereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES M. DODGE.

Witnesses:

WM. E.'SHUPE, WM. A. BARR. 

